If you have moved to Dallas–Fort Worth from West Texas, the first thing you notice is that the water is easier. That is real, and it is because the two places get their water from completely different places.
Lake water, not groundwater
DFW runs on surface water. Dallas Water Utilities draws on the city's reservoir system and holds a Superior rating from the Texas Commission on Environmental Quality, the highest the state awards. Fort Worth and the mid-cities run on the Tarrant Regional Water District reservoirs. North of the metroplex, the North Texas Municipal Water District supplies Plano, Frisco, McKinney, Allen, Garland, Richardson, Rockwall and more.
NTMWD describes its own treated water as “moderately hard”, and says plainly that this is because of the minerals in Lavon Lake. Moderately hard is a world away from Midland — but moderately hard is still hard enough to scale a water heater and spot your glassware.
The part people do not expect
NTMWD disinfects with chloramine rather than plain chlorine. Chloramine is chlorine combined with ammonia, and the practical consequence is simple: it does not gas off.
The old trick of leaving a jug of water on the counter overnight to lose the chlorine taste does very little against chloramine. Getting it out properly takes a real carbon bed with enough contact time — not a jug filter, and not a cheap inline cartridge.
So what does a DFW house actually need?
Usually both halves, in smaller doses than a Permian Basin house needs. A softener handles the hardness that scales your heater. A carbon stage handles the chloramine behind the taste and the smell. And reverse osmosis under the kitchen sink handles the dissolved solids that neither of those is built to catch — that is the one people notice in the coffee the first morning.
Which are you?
Put your ZIP into the tool on our home page and it will tell you who supplies your water and where it comes from. Then call us and we will tell you what fits your house.